Which agents work with it?

Any agent that reads skills from a directory. Claude Code, Codex and Gemini CLI read it natively; Cursor and VS Code connect over MCP.

The voice runs on your own machine, so there is nothing to meter. The first run downloads it, about 340 MB.

Yes. The skill is MIT-licensed and the authoring format is public.

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Claude Code v2.1.321 makes Fable 5.2 the default, with 1M context

5 days ago

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Claude Code v2.1.321 makes Claude Fable 5.2 the default Fable model, with 1M context at $8/$40 per million tokens. Saved Fable 5.1 picks move over on Pro and Max now, on Team and Enterprise once the organization allows it. Also: an MCP OAuth refresh-token leak fixed, two sandbox and deny-rule gaps closed, a settings file for claude remote-control, and fast mode falling back to standard speed instead of losing replies. https://github.com/anthropics/claude-code/releases/tag/v2.1.321 https://github.com/anthropics/claude-code/blob/main/CHANGELOG.md https://github.com/anthropics/claude-code/compare/v2.1.319...v2.1.321

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Claude Fable 5.2 is now the default Fable model in Claude Code. It holds a million tokens of context, and costs eight dollars per million tokens in and forty dollars out.
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Claude Code now runs Fable 5.2 as its default Fable model

Context
1M tokens
Price
$8 in · $40 out per million tokens
Cache reads
$0.20 per million tokens

CHANGELOG.md · anthropics/claude-code
If you saved Fable 5.1 as your model, Claude Code moves you to Fable 5.2. Pro and Max plans move right away. Team and Enterprise plans wait until the organization allows it. Fable 5.1 stays available.
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>Saved Fable 5.1 picks move to Fable 5.2

Pro and Max
right away
Team and Enterprise
once your organization allows it
Fable 5.1
still in /model if you want it back

CHANGELOG.md · anthropics/claude-code
Three security fixes. A redirecting MCP server could send refresh tokens to another host. A Bash command that only reads files could skip the sandbox. And deny rules missed files copied or moved into a folder.
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>Fixed: a token leak and two ways past the permission checks

MCP OAuth
a server redirect could send refresh tokens to another host
Bash
a read-only command could run outside the sandbox without a prompt
cp and mv
deny rules missed the file a copy or move into a folder writes

CHANGELOG.md · anthropics/claude-code
Remote Control can now apply one settings file to every session it starts. If you edit that file, no new session starts until you restart Remote Control.
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>claude remote-control takes a settings file

New flag
--settings <file>
Applies to
every session Remote Control starts
Edit the file
no new session starts until you restart Remote Control

CHANGELOG.md · anthropics/claude-code
When fast serving was rate limited or overloaded, fast mode could lose replies, switch models, or retry for minutes. Now it falls back to standard speed on the same model first.
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>Fast mode drops to standard speed instead of losing replies

Before
when fast serving was rate-limited or failing, replies were lost, models switched, retries ran for minutes
Now
tries standard speed on the same model first

CHANGELOG.md · anthropics/claude-code
Bash commands sent together no longer run in the wrong folder. Edits on network drives stop hitting the wrong match or replacing whole files. And a failed git status no longer looks clean to Claude.
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>Fixed: Bash in the wrong folder, network-path edits, a false clean git status

Bash
several commands sent at once could run in the wrong folder after one changed folders
Edit
on UNC shares, WSL folders and /net mounts, could change the wrong match or replace a whole file
git status
a failed check reached Claude as a clean tree; it now reads as unavailable

CHANGELOG.md · anthropics/claude-code
The Claude Code changelog lists over a hundred more changes. If your MCP servers sign in with OAuth, I'd update today, for the refresh token fix alone.
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Every change is in the Claude Code changelog

https://github.com/anthropics/claude-code/blob/main/CHANGELOG.md

CHANGELOG.md in anthropics/claude-code

Use MCP servers that sign in? I’d update today.

CHANGELOG.md · anthropics/claude-code